* {
  margin: 0;
  padding: 0;
  font-family: 'Arial', '微软雅黑';
}
ul,
li {
  list-style: none;
}
.bbs {
  margin: 0 auto;
  width: 600px;
  position: relative;
}
header {
  padding: 5px 0;
  border-bottom: 1px solid #cecece;
}
header span {
  display: inline-block;
  width: 220px;
  height: 50px;
  color: #fff;
  background: #009966;
  font-size: 18px;
  font-weight: bold;
  text-align: center;
  line-height: 50px;
  border-radius: 8px;
  cursor: pointer;
}
.post {
  position: absolute;
  background: #ffffff;
  border: 1px #cccccc solid;
  width: 500px;
  left: 65px;
  top: 70px;
  padding: 10px;
  font-size: 14px;
  z-index: 999999;
  display: none;
}
.post .title {
  width: 450px;
  height: 30px;
  line-height: 30px;
  display: block;
  border: 1px #cecece solid;
  margin-bottom: 10px;
}
.post select {
  width: 200px;
  height: 30px;
}
.post .content {
  width: 450px;
  height: 200px;
  display: block;
  margin: 10px 0;
  border: 1px #cecece solid;
}
.post .btn {
  width: 160px;
  height: 35px;
  color: #fff;
  background: #009966;
  border: none;
  font-size: 14px;
  font-weight: bold;
  text-align: center;
  line-height: 35px;
  border-radius: 8px;
  cursor: pointer;
}
